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Finding the Fourth Proportional to 11,447.40, 15,801.30 and 8,045.40

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Solution

The fourth proportional to 11,447.40, 15,801.30 and 8,045.40 is: 11,105.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,447.40 : 15,801.30 = 8,045.40 : x
  2. Step 2: Convert to fraction form
    11,447.40/15,801.30 = 8,045.40/x
  3. Step 3: Cross multiply
    11,447.40x = 15,801.30 × 8,045.40
  4. Step 4: Simplify right side
    11,447.40x = 127,127,779.02
  5. Step 5: Solve for x
    x = 127,127,779.02/11,447.40
  6. Step 6: Final answer
    x = 11,105.38

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.